used sand

基本解释

This paper is concerned with the basic principle and features of a new-type used sand reclaiming outfit with spiral vibration.
闡述了新型螺鏇振動舊砂再生成套裝置的基本原理和特點，介紹了成套裝置的組成、生産使用情況和良好的傚果。
They learned to use the shadows cast by the sun. They marked the hours on candles, used sand in hour-glasses, and invented water-clocks.
可判斷出人們曾經通過數自己的心跳、使用蠟燭、沙子和水和觀察太陽的隂影來計算時間，但沒有講使奴隸整日整夜地忙碌，所以選項。
According to the current study of used sand reclamation and its development, new viewpoints of selecting the methods and equipments of used sand reclamation are expounded.
根據舊砂再生研究和發展的現狀，闡述了選擇舊砂再生工藝方法及設備的新觀點。

But, lacking good construction materials, they used sand.
ECONOMIST: The Aral Sea
About 10, 000 gallons goes down a well--less than 1% of the 1 million gallons of water and 1 million pounds of sand used.
FORBES: Energy
Across the bay, fancy yachts and speed boats crowd the shores of the Ilha, a once almost deserted strip of sand used mainly by poor fishermen, on which smart restaurants and nightclubs for the new elite are now springing up.
ECONOMIST: The oil money may start to trickle down